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[8.198] εἰ γὰρ καυστικὴν εἶχε φύσιν τὸ πῦρ, ὤφειλε πάντα καίειν καὶ μὴ τινὰ μὲν καίειν τινὰ
δὲ μηδαμῶς˙ καὶ εἰ τηκτικὴν εἶχε δύναμιν, πᾶν ὤφειλε διαλύειν καὶ μὴ τινὰ μὲν τινὰ δ' οὔ.